The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 1997
Filed:
Apr. 19, 1994
Applicant:
Inventor:
Darrell L Gallup, Chino Hills, CA (US);
Assignee:
Union Oil Company of California, El Segundo, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F / ;
U.S. Cl.
CPC ...
210665 ; 210669 ; 210673 ; 210674 ; 210692 ;
Abstract
Large volumes of waste water stream containing oil, greases, sometimes ferric ions, and dissolved contaminant hydrocarbons such as BTEX are rapidly treated in two stages. Initially, the oils and greases are separated, then the dissolved contaminant hydrocarbons are removed by countercurrent adsorption on powdered resinous polymeric adsorbents in an exchange zone, preferably in the absence of ferric ions. The contaminant laden adsorbents are regenerated and continuously recycled to the exchange zone.